Hello dear I understand your concern Pain in lower quadrant and fluid in POD could be due to pelvic inflammatory disease, peritonitis, rupture of ovarian cyst, gastroenteritis. Absence of dysurea, and pus cell suggests rule out the possibility of UTI. I would suggest to consult the gynecologist and undergo clinical examination and blood tests like (ESR), the C-reactive protein (CRP) level, and chlamydial and gonococcal DNA probe to rule out the cause. Broad spectrum antibiotic like ceftriaxone in intravenous or tablet form depend on severity will help Tablet ibuprofen plus serritopeptidase Hope this may help you Contact HCM for further heath query Best regards Dr. Sagar